class Game
    def initialize(id, title, price)
        @id = id
        @title = title
        @price = price
    end

    def showGame
        puts @id + @title + @price.to_s
    end

    #static method
    def self.toStr
        puts "love this game"
    end
end

zelda = Game.new("zelda","塞尔达",350)
zelda.showGame

Game.toStr
Game::toStr